Tā / zhī / dào / zì / jǐ / shuō / cuò / huà / hòu / mǎ / shàng / xiàng / tóng / shì / péi / bú / shi

他知道自己说错话后，马上向同事赔不是。

After realizing he had said the wrong thing, he immediately apologized to his colleague.